Water-feed for boilers.



l 0.582,62'8. y Patented sept'. I7, Ism.

As. n.v non. WATER FEED FR BDILEBS.

(Application tiled Dec. 4, 1900.)V (No edel.)

UNITED STATES PATENT OEEICE. i

SAMUEL D. MOTT, OF PASSAIO, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGN-MENTS, TO MOTORMOBILE COMPANY, OF JERSEY CITY, NEW JERSEY.

WATER-FEED FOR BOILERS.

SPECIFIGATIQN forming part of Letters Patent No. 682,628, datedSeptember 17, 1901.

Application filed December 4, 1900. Serial No. 38,699. (No model.)

T all whom it noa/y concern:

Be it known that I, SAMUEL D. MOTT, of Passaic, Passaic county, NewJersey, have invented certain new and useful Improvements in Water-Feedsfor Boilers, of which the following is a full, clear, and exactdescription.

My invention relates to improvements in that class of devices whichsupply water to steam-boilers; and the object of my invento tion is toproduce a very simple, positive, and

inexpensive device which can be applied to any ordinary steam-boiler,but which is particularly adapted for use in connection withautomobile-boilers or boilers which are required to make steam atdifferent rates, Aone of the especial features of the invention beingthat it will adapt itself to the steaming requirements of the boiler andfeed water faster or slower according as the vehicle is 2o driven fasteror slower.

Other objects of my invention are to produce a device of this characterwhich has a reliable automatic gravity-feed-that is, a feed that willsupply water to the boiler when e5 it is needed and will not supply itunless it is needed.

To these ends my invention consists of certain features of constructionand combination of parts, which will be hereinafter described andclaimed.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar iigures of reference refer tosimilar parts throughout the several views.

3 5 Figure 1 is a detail vertical section of a device in a simple form,illustrating the principle of my invention, but not made withthenecessary details for practical use. Fig.2 is

' a central vertical section of my invention as 4o applied to a boiler.Fig. 3 is a vertical section taken at right angles to that illustratedin Fig. 2, and Fig. 4 is a plan of one of the piston-valves forming apart of'the invention.

Fig. 1 illustrates the invention in its sim plest form; but the devicehere shown is not sopractical as that illustrated in the otheriigures,for the reason that it is dicult to keep the piston-valvestight.

5o the principle of the invention, however, and

This iigure shows herethe vertical receptacle 10 has a suitablewater-inlet 11 near the top and connections 12 and 13, adapted tocommunicate with the water and steam portions of a steam-boiler, thedevice being located so that the normal boiler water-level would liebetween the parts 12 and 13. The parts represented by the water-inlet 11and steam-inlet 13 are closed and opened by the piston-valve 14, whilethe part represented by the boiler connection 12 is 6o closed by thepiston 15, these two pistons 14 and 15 being similar in structure andhaving vertical holes .17 extending through them. Both pistons or valvesare connected to astem or rod 16, which reciprocates vertically in thereceptacle lO, being worked by any means either manual or mechanical, sothat the piston-valves 14 and 15 move between the points indicated bythe dotted lines in the drawings.

It will be noticed that when the piston-valves 7o are moved up theboiler connections 12 and 13 are closed, but the water-inlet 11 isopened,

so that the receptacle 10 can be iilled. When the piston-valves movedownward, however,

the connections 12 and 13 are opened and the 75 water-inlet closed, sothat the steam will enter through the pipe 13, and thus make thepressure in the receptacle 10 the same as it is in the boiler, and thewater Will then of course gravitate through the pipe 12 until the level8o of the water is the same in the boiler as it is in the receptacle 10.For practical purposes, however, the structure shown in Figs. 2 and 3 ispreferable, because more reliable. Referring to Figs. 2 85 and 3, thereceptacle 18 has a water-inlet 19, by which it can be filled, and hasconnections 20 and 22 with the steam and water portions of 'the boiler21, the receptacle being located, as before, at a point approximating 9othe ordinary water-level ofthe boiler. The l steam connection to thereceptacle 18 is normally closed by an inverted-cup-shapedw.. valve 23,which has on the under side aseat! ing part 24, which seats against thevalveseat 25, the valve being pressed down by a spring 26, which actsbefore there is any considerable steam pressure, after which of coursethe steam will be sufficient to normally close thevalve. Extendingcentrally 'roo downward from the valve 23 is a stem 27, on which is anut 28 to hold the Jenkins metal 24- in place, and this stem has areduced eX- tension 29, extending into the bore 30 of the mainpiston-valve stem or rod 32, so that the valve is always suitablyguided. The bore 31 (shown in Fig. 2) is merely a vent for the bore 30.The stem 27 abnts with the `upper end of the main piston-rod orvalve-stem 32, which carries at its upper and lower ends the mainpiston-valves 33 and 33a, these Working in cylindrical chambers 31 and34a, formed at the top and bottom of the receptacle 18. Thepiston-valves 33 and 33 are each pierced by the vertical holes 35, whichpermit Water and steam to pass through them, and tle lower end of thestem or red 32 is reduced and extends downward through a suitablestuffingbox 3b. It will be noticed by referring to Figs. 2and 3 thatwhen the piston-valves 33 and 33 are moved downward to the positionshown in Fig. 3 the water can freely enter through the inlet 19 to fillthe receptacle 18, and when the piston-valves are moved up the inlet 19is closed. The piston-valves can be moved up and down by any mechanicalvmeans acting on the rod or stem 32 and against the steam-pressure andagainst the pressure of the spring 26, and when this upward movement issuicient to lift the valve 23 from its seat the inlet 19 will still beclosed, but the valve 33a will uncover the connection to the pipe 22,while the valve 23 will be lifted so as to open the steam-pipe 20.Consequently the boilerpressure will enter the receptacle 1S and thewater in the receptacle will find its level with the water in theboiler. It will of course be understood that suitable mechanicalmeans-such, for instance, as that shown in my application, Serial No.33,701, for a patent on boiler, filed simultaneously with this-can beattached to any vehicle or even to any stationary boiler for moving thevalves 33 33a and valve stem or rod 32, so as to provide for thedescribed water-feed.

From the foregoing description it will be seen thatI provide a simpleand positive means by which water is fed by gravity into the boiler, andit will be noticed that the water will not be fed except when it isrequired. It will be noticed, too, that in either form when thewater-inlet to the reservoir is open the reservoir can fill, and afterthis the water will feed from the reservoir to the boiler' faster orslower, as is required-that V is, supposing it to be attached to anautomobile if the vehicle runs fast the boiler will necessarily makesteam fast and will require more water, and as the valves are operatedby some driving part of the automobile they will be moved withsufficient rapidity to permit the requisite flow of water to the boiler.It will of course be understood that if the boiler' is full to a pointabove the top of the receptacle 13` no water-feed will take place;

but when the water-level of the boiler gets below the top of thereceptacle the feed will begin. Attention is also called to the factthat the steam in the receptacle 1S will condense very rapidly,particularly in cool weather, and if this condensation is required to bevery rapid the receptacle may be waterjacketed. The result of this rapidcondensation is to produce a partial vacuum in the recept-acle 18, sothat when the inlet 19 is opened the water Will rush in positively andquickly, even though the supply be at a lower level than the receptacle18.

I do not wish to confine myself to the precise'structure shown in thisapplication. For instance, the valve might be modified to a certainextent and the inlet 19 may be opposite the lower valve 33a instead ofopposite the upper valve It will be observed that my invention asdescribed and shown has the valves controlling the steam and Water foreffecting the feed positively driventhat is, they are operated withoutregard to steam or water pressure by external means-and in the claims Ishall use the term mechanically driven to distinguish the valvemechanism from that class of water-feed in which valves areoperated atvarying intervals by weights, steampressure, the weightof the water inthe feeding-receptacle, and analogous devices.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, vis- 1. In a device of the kind described, thecombination with the receptacle having a Water-inlet and boilerconnections near the top and bottom, ot' a pair of reciprocating valvesadapted to open and close the steam connection and water inlet, and anindependent valve adapted to close the steam connection, the saidindependent valve being moved up by the upstroke of the first-mentionedvalves.

2. A device of the kind described, comprising a receptacle 4having steamand water connections' near the top and bottom respectively with aboiler, a valve seated in the steam connection so as to normally closeit, a pair of connected ported valves movable over the water-inlet andover the Water connection to .the boiler, and means for opening thevalve in the steam connection by the upstroke of the two ported valves.

3. A device of the kind described, comprising a receptacle having steamand water connections near the top and bottom respectively with aboiler, a pair of vertically-ported connected valves reciprocating overthe waterinlet and the water connection to the boiler, a valvecontrolling the steam connection, and means for lifting and opening thevalve in the steam connection by the upward movement of the connectedvalves.

4. A device of the kind described, comprising a receptacle having steamand water connections near the top and bottom respectively,

IOC

IIG

and a pair of vertically-ported connected In testimony whereof I havesigned my valves movable in unison over the Water-inlet name to lhisspecification in the presence of and the water connection to the boiler,and two subscribing witnesses.

a check-valve having a depending stem ex- SAMUEL D. MOTT. tendingdownward into the path of lshe stem I of the ported Valves whereby theupstroke of l the latter raises the Check-valve.

Witnesses:

JOHN D. GRIFFEN, W. B. HUTCHINSON.v

